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Old 07-31-2013, 01:08 AM
Denny Shira Denny Shira is offline
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Default Need tune up specs for 70 superior

Need tune specs for my 70 superior.Dwell,timing,plug gap,idle speed.Also need torque spec for pinion shaft.Loaned out my old motor manual to someone,don't remember who
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Old 07-31-2013, 09:58 AM
Paul Steinberg Paul Steinberg is offline
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Dwell = 30 degrees (28 -32 degrees acceptable)
point gap = .016
plug gap = .035
idle speed = 550 RPM in drive, with wheels chocked, and parking brake set.
timing = 5 BTDC with vacuum advance plugged, and the emergency brake vacuum line removed and plugged, according to the manual, and is set while the car is in neutral or park.
these are settings for 1969
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Old 07-31-2013, 10:15 AM
Paul Steinberg Paul Steinberg is offline
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Torque spec for the pinion shaft nut is 200 pounds, however, there are very specific measurements that need to be taken before changing the pinion shaft seal, and special tools needed to reinstall the pinion shaft seal. The manual specifically says not to hammer the seal into place because damage will occur. The same with the pinion shaft flange plate, it also has to be removed and installed using special tools. Not something that I suggest that you attempt without having the manual in front of you to decide if you want to attempt this without the proper tools. After seeing the information, I would be inclined to leaving this job to someone that has the tools and past experience. If you messed it up, you would be hard pressed to find another differential or repair parts.
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Old 07-31-2013, 11:33 AM
Denny Shira Denny Shira is offline
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THANKS PAUL!!! You're a lifesaver. A good friend of mine is a former GM tech,and will assist me (he has the proper tools) so everything should go smoothly.
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Old 07-31-2013, 11:34 PM
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John ED Renstrom John ED Renstrom is offline
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broke down and cleaned and re gaped the plugs in the 53 today. you it runs a lot better with them gaped at 26 instead of 35
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Old 07-31-2013, 11:37 PM
Paul Steinberg Paul Steinberg is offline
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Quote:
Originally Posted by John ED Renstrom View Post
broke down and cleaned and re gaped the plugs in the 53 today. you it runs a lot better with them gaped at 26 instead of 35
Sounds like your ignition coil is either weak or the wrong one.
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